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Standard enthalpy change for combustion | Thermodynamics | Chemistry | Khan Academy

This video talks about the definition of the standard enthalpy of combustion. It also helps us identify the relationship between the standard enthalpy of combustion and the calorific value for a given fuel. This helps us compare different fuels. 00:00- Introduction 2:14- Is combustion enthalpy always negative? 2:34- Comparing fuels using combustion enthalpy values. 4:13- Calculating enthalpy of formation using combustion enthalpy values. Practice this concept - “https://www.khanacademy.org/science/p... Check out more videos and exercises on “Thermodynamics” - https://www.khanacademy.org/science/p... To get you fully ready for your exam and help you fall in love with “Chemistry”, find the complete bank of exercises and videos for “Class 11 Chemistry” here -https://www.khanacademy.org/science/c... Khan Academy is a free learning platform for Class 1-12 students with videos, exercises, and tests for maths, science, and more subjects. Our content is aligned to CBSE syllabus and available in Hindi, English, and many more regional languages. Experience the joy of easy, seamless, accessible learning anywhere, anytime with Khan Academy. Subscribe to our YouTube channel -    / khanacademy   As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?ut... Created by Jitin Nair